Latest Contributions by SteveLynch

Use Cell Statistics only if the NoData cells have been changed to 0, since it will propagate NoData values from any input raster into the output raster. See "How Cell Statistics works". Kind regards, Xander Xander Create a ConstantRaster (filled with 1's), then use the Shift tool (say shiftx, shifty=55) and create another raster. Use CellStatistics (Overlay statistic=Sum), Extent=Union and the rest=default. You'll notice that your output has 1's and 2's and, Nodata in areas where neither rasters have values. Now if you uncheck Ignore Nodata on the Cellstats tool and do the above you'll only get 2's -Steve ... View more

use the Cellstatistics tool and set the extent to Union -Steve ... View more

None of the current interpolation tools do "round the world" interpolation. I.e. the search neighborhood ends at 0 and at 360. Think of it as a rectangle 0 to 360 and -90 to +90. The points on the far left, circa 0, are not considered neighbors of the points on the far right, circa 360. Also, the Arctic Circle is a rectangle! Also, a cell size of 0.04 at the equator and a the poles, what does it represent? If you make the cell size too small then you might encounter the SplineWithBarriers size limit (16500; 16500 columns and rows). However, a cellsize of 0.04 degrees only yields a raster with 9028 columns and 4358 rows. To do this type of interpolation you'll need to interpolate in blocks and Mosaic the output. Also best to work in projected coordinates and not in Geographic coordinates. -Steve ... View more

EBK with barriers does not exist. ... View more

The "tutorial" page at http://resources.arcgis.com/en/help/main/10.2/index.html#//0031000000nz000000 suggests that you go to https://customers.esri.com/index.cfm?event=login.show to download the data. Have you tried that? Steve ... View more

Wrt size of the raster, right click on the input raster, Properties->Source->Columns and Rows. This will tell you how many pixels are to be processed. In the case of a MosaicDataset it is not that simple, easiest way to do it is to use one of SA's less complex tools to create an output from which to determine the number of pixels that'll be processed. You could simply use the Int tool and then look at the number of columns and rows of the output raster created by Int. Or in your case you can look at the properties of your FlowDirection raster, and, how long did it take to get created? You also need to state what version of ArcGIS you are using. -Steve ... View more

http://blogs.esri.com/esri/arcgis/2012/09/17/finding-locations-for-new-monitoring-sites-using-the-densify-sampling-network-tool/ ... View more

Exercise 1 will guide you through the process of blanking out part of the geostatistical layer. This comes in handy when you are preparing a graphic to use in document. Steve ... View more

Run the following tools - RasterToPoint - AddXY (add xy coordinates from the Data management tbx) Steve ... View more

Christopher Please could you send me the data (slynch@esri.com) and the parameters that cause this problem? And have you installed Service Pack1 for 10.1? Steve ... View more

Have a look at New Spatial Analyst Supplemental tools, v1.2 ... View more

Hank The first usage tip will tell you that Natural Neighbor interpolation cannot be used to extrapolate outside the convex hull. Steve ... View more

See tool help for a list of Environments that are supported. ... View more